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Baxi 5106287 Expansion Vessel Cimm 12 Litre

Baxi

Baxi 5106287 Expansion Vessel Cimm 12 Litre

Baxi 5106287 12 litre expansion vessel for Baxi heating appliances, absorbing system water expansion to keep pressure stable.

At a glance

  • Part type: Expansion vessel
  • Also known as 1151280, N7175
Manufacturer part no.
BAXI5106287
Showing prices

£165.11

£137.59 ex. VAT · VAT at 20%

In stock
Cut-off passed — dispatches next working day
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Baxi 5106287 is a 12 litre expansion vessel manufactured by Baxi for use in its heating appliances. It is fitted on the heating circuit and takes up the increase in water volume as the system heats, keeping the operating pressure within a stable band. An internal diaphragm separates the water side from a pre-charged air side, so the vessel absorbs expansion without the pressure relief valve having to discharge.

Signs this part needs replacing

  • System pressure rises sharply as the appliance heats and falls back again once it cools.
  • The pressure relief valve discharges, or water continues to run from the discharge pipe.
  • The filling loop has to be used regularly to bring the appliance back up to pressure.
  • Water escapes from the air valve on the vessel when the pre-charge is checked.
  • The pressure gauge reads high while the appliance is cold.

Before you order

  • Check the appliance model and GC number against the compatibility information for this part.
  • Match part number 5106287 against the vessel currently fitted to the appliance.
  • Confirm the connection size and orientation on the appliance before fitting.
  • A sealing washer or connection gasket at the vessel connection may need to be renewed at the same time.

Not sure which part?

Tell the parts assistant what it's going into — the appliance make and model, or the GC number off the data badge — and it will check this part is on the fit list.